Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b997d4d69f3b01b…

MALICIOUS

PDF

44.5 KB Created: 2021-05-10 18:31:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 20867cbcf25ea9c456688f92a96b099a SHA-1: c8cda12299ed971b0b6160809b969dfc8060d224 SHA-256: 9b997d4d69f3b01b3bcfd2273fe32b6e928ef4dc2e24fc503df07790a29082b0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to external websites that are flagged as malicious redirectors, promising free in-game items. The document body and embedded URLs suggest a lure for game-related scams, likely intended to lead users to phishing sites or download further malware. The presence of embedded URLs and the ML classifier strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.xyz/app/479516143/how-to-get-a-cape-in-minecraft-for-free-game-hack In PDF document text
    • http://pustaka.bbppketindan.info//repository/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-robux-accounts-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/com-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-spin-sites-for-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/gold-cards-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-private-server-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/robux-page_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-spins-coin-master-2021-glitch_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/minecraft-auto-miner-hack_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/where-to-get-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-hack-apk-2021-ios_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/minecraft-xbox-one-free_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-free-spins--spins_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-free-pin_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000492d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x492D 24496 bytes
SHA-256: fd490bfdeddf5367ace1d08bf67b6af857561d565c9d39ce5ad81a5b64d492d1
font_01_sfnt_off0000813f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x813F 3092 bytes
SHA-256: 3811f2fb1880daf4953efcc9c7427d9b438bced237490b00be4a6ec3ecea79e0
font_02_sfnt_off00008bea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BEA 18052 bytes
SHA-256: 651613c0b0933ea46dfe34ab8437030315119b6d54c219aba7cf9326f75e4fa1

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